热回收焦炉桥管和集气管烟气流动特性的研究

针对某热回收焦炉桥管和集气管存在的问题,建立数学模型,利用CFD数值模拟软件,对管内的流动传热进行分析研究,结果表明,在集气总管尺寸固定、集气支管保温效果良好的情况下,应尽可能增大集气支管内径,以平衡各炭化室对应桥管的吸力,进而增大集气支管末端炭化室所供烟气体积流率。

Study on the flue gas flow features in gooseneck and gas collecting main of coke oven with heat recovery

A mathematical model is established for the existing problems of the gooseneck and gas col- lecting main of a coke oven with heat recovery. The flow heat transfer in them is analyzed and studied by the utilization of the CFD numerical simulation software. The result shows that under the conditions of the fixed dimensions and good thermal insulation performance of the branch pipes of gas collecting main, it is as much as possible to increase the branch pipe diameters of the collecting main to balance the suction force of coking chambers to corresponding gooseneck and thus to increase the volumetric flow rate of flue gas from coking chamber at the end of branch pipe of the collecting main.